Andrew E. LaMotteMichael E. Wieczorek2010National Land Cover Database 2001 (NLCD01) Tree Canopy Layer Tile 2, Northeast United States: CNPY01_2Version 1raster digital dataData SeriesDS-586BReston, VirginiaU.S. Geological Surveyhttps://water.usgs.gov/lookup/getspatial?cnpy01_2This 30-meter resolution data set represents the tree canopy layer for the conterminous United States for the 2001 time period. The data have been arranged into four tiles to facilitate timely display and manipulation within a Geographic Information System, browse graphic: nlcd01-partition.jpg
The National Land Cover Data Set for 2001 was produced through a cooperative project conducted by the Multi-Resolution Land Characteristics (MRLC) Consortium. The MRLC Consortium is a partnership of Federal agencies (www.mrlc.gov), consisting of the U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration (NOAA), the U.S. Environmental Protection Agency (USEPA), the U.S. Department of Agriculture (USDA), the U.S. Forest Service (USFS), the National Park Service (NPS), the U.S. Fish and Wildlife Service (USFWS), the Bureau of Land Management (BLM), and the USDA Natural Resources Conservation Service (NRCS). One of the primary goals of the project is to generate a current, consistent, seamless, and accurate National Land Cover Database (NLCD) circa 2001 for the United States at medium spatial resolution. For a detailed definition and discussion on MRLC and the NLCD 2001 products, refer to Homer and others (2004) and http://www.mrlc.gov/mrlc2k.asp.
The NLCD 2001 was created by partitioning the United States into mapping-zones. A total of 68 mapping-zones browse graphic: nlcd01-mappingzones.jpg were delineated within the conterminous United States based on ecoregion and geographical characteristics, edge-matching features, and the size requirement of Landsat mosaics. Mapping-zones encompass the whole or parts of several states. Questions about the NLCD mapping zones can be directed to the NLCD 2001 Land Cover Mapping Team at the USGS/EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov.To provide complete, current, and consistent public domain information of national land use and land cover. This national (conterminous United States) data set was developed for use by the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program. NAWQA uses land-use data to assess land-use change, such as urban development and loss of agricultural lands as well as to allocate nutrient and pesticide loads to particular land-use categories.The data is stored in four tiles (CNPY01_1, CNPY01_2, CNPY01_3, CNPY01_4) browse graphic: nlcd01-partitions.jpg to allow for storage using the ArcInfo Workstation GRID data model, which cannot support files larger than 2.1 gigabytes. Each tile has been stored as a gzipped ARCTAR file. To extract the ArcInfo Workstation GRID from the .tgz archive file use WINZIP, TARARC, or the following commands: "gunzip tilename.tgz" then "tar xvof tilename.tar".
Questions about the NLCD mapping of any zone can be directed to the NLCD 2001 Land Cover Mapping Team at the USGS's Earth Resources Observation and Science (EROS) Center, Sioux Falls, SD by telephone (605) 594-6151 or by email (mrlc@usgs.gov).
The method employed to map tree canopy density for NLCD 2001 consists of three key steps: deriving reference data of tree canopy density from the high spatial resolution images, calibrating density prediction models using reference data and Landsat spectral bands, and extrapolating the developed models spatially to map per-pixel tree canopy density. This method is described in detail in Huang and others (2001).
The development of training data for tree canopy density estimation is documented in each mapping-zone's metadata file.
Each downloadable multi-zone image layer browse graphic: nlcd01-multizones.jpg is comprised of merged multiple mapping-zones browse graphic: nlcd01-mappingzones. Each mapping-zone has its own metadata that can be found in the appropriate mapping-zone metadata directory that is created when the downloaded multi-zone file is decompressed. The metadata for mapping-zone 01 would be located under the directory area1_landcover_metadata\zone1_canopy_meta_web_final (where "area1" is the same as "Multi-zone 1" and "zone1" is "mapping-zone 01"). The organization of multi zones and mapping zones for TILE 2 is as follows: Multi-zone 6 contains mapping-zones 31, 39, 40; Multi-zone 8 contains mapping-zones 41, 50, 51; Multi-zone 9 contains mapping-zones 38, 42, 43; Multi-zone 11 contains mapping-zones 47, 49, 52, 53, 62; Multi-zone 13 contains mapping-zones 60, 61, 63, 64, 65, 66.
Original Data Creation Listing:
Tile 2
Multi-zone 6
Mapping-zone 31: USGS, MDA Federal Inc.
Mapping-zone 39: USGS, MDA Federal Inc.
Mapping-zone 40: USGS, MDA Federal Inc.
Multi-zone 8
Mapping-zone 41: USGS, USDA Forest Service Remote Sensing Applications Center.
Mapping-zone 50: USGS, Sanborn Mapping Company.
Mapping-zone 51: USGS, Space Imaging LLC.
Multi-zone 9
Mapping-zone 38: USGS, Sanborn Mapping Company.
Mapping-zone 42: USGS, MDA Federal Inc.
Mapping-zone 43: USGS, MDA Federal Inc.
Multi-zone 11
Mapping-zone 47: USGS, Space Imaging LLC, Kentucky Landscape Initiative.
Mapping-zone 49: USGS, Sanborn Mapping Company.
Mapping-zone 52: USGS, Sanborn Mapping Company.
Mapping-zone 53: USGS, Space Imaging LLC, Kentucky Landscape Initiative.
Mapping-zone 62: USGS, Sanborn Mapping Company.
Multi-zone 13
Mapping-zone 60: USGS, Earth Satellite Corporation.
Mapping-zone 61: USGS, MDA Federal Inc.
Mapping-zone 63: USGS, USDA Forest Service.
Mapping-zone 64: USGS, USDA Forest Service Northeastern Research Station.
Mapping-zone 65: USGS, USDA Forest Service Northeastern Research Station.
Mapping-zone 66: USGS, Sanborn Mapping Company.
2001publication dateCompleteAs needed-98.612036-65.14359951.85793837.105324NoneNational Water-Quality AssessmentNAWQAland coverland useNational Land Cover Data SetNLCDInlandwatersTree canopyNoneConterminous United StatesNoneUsers should refer to the metadata for each mapping zone for use constraints that may be unique to each zone.Andrew LaMotteU.S. Geological Surveymailing and physical address5522 Research Park DriveBaltimoreMaryland21228USA443-498-5549443-498-5510alamotte@usgs.govMonday through Friday, 9:00 am - 5:00 pm ESTemailhttps://water.usgs.gov/GIS/browse/cnpy01_2.jpgTree Canopy Layer Tile 2, Northeast United StatesJPGU. S. Geological SurveyMicrosoft Windows Vista Version 6.1 (Build 7600) ; ESRI ArcCatalog 9.3.1.3500U.S. Geological Survey2001National Land Cover Data set (NLCD 1992)raster digital datahttp://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/NLCD_92U.S. Geological SurveyNakagaki, NaomiPrice, Curtis V.Falcone, James A.Hitt, Kerie J.Ruddy, Barbara C.2007Enhanced National Land Cover Data 1992 (NLCDe 92)1.0, 2005Raster digital datahttps://water.usgs.gov/lookup/getspatial?nlcde92U.S. Geological SurveyHitt, Kerie J.2006National Land Cover Data Set (Enhanced with GIRAS then revised with 1990 and 2000 Population) - "NLCDEP"Version 3, March 2006 (Replaces Version 2, Sept 2005)Raster digital data Huang, C.,Yang, L., Wylie, B., and Homer, C.2001A strategy for estimating tree canopy density using Landsat 7 ETM+ and high-resolution images over large areas, in proceedings of Third International Conference on Geospatial Information in Agriculture and Forestry, November 5-7, 2001, Denver, Colorado, CD-ROM, 1 disk.Homer, C., Huang, C., Yang, L., Wylie, B., and Coan, M.2004Development of a 2001 national land cover database for the United States: Photogrammetric Engineering and Remote Sensing, v. 70, no. 7, p. 829 - 840, or online at http://www.mrlc.gov/publications.php v. 70, no. 7, p. 829 - 840 http://www.mrlc.gov/publications.phpESRI feature type: Geometry, TopologyComplete for conterminous United StatesMulti-zone zipped image files were downloaded from the MRLC multi-zone web site http://www.mrlc.gov/index.asp on May 21, 2007. Image header files were then built partly based on the format supplied by the USGS LCI (Land Cover Institute) from the web site http://landcover.usgs.gov/faq.php; the exact parameters are shown below. Left longitude and top latitude extents were obtained for each image by reading the source information in ArcGIS. Images were then converted to raster data sets using the IMAGEGRID command in Arc workstation. The command PROJECTDEFINE was then applied to each multi-zone grid for proper display and projection definition. The resulting raster data sets were then merged together using the national tile configuration previously established by NAWQA for NLCD, NLCDe, and NLCDeP. Tiles were assembled by using the SETWINDOW command with the NAWQA tiles as SNAP grids for proper alignment with the other national data sets.
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Tile 2 Contains all or parts of the following multi-zones and their respective mapping-zones.
Multi-zone 6: mapping-zones 31, 39, 40;
Multi-zone 8: mapping-zones 41, 50, 51;
Multi-zone 9: mapping-zones 38, 42, 43;
Multi-zone 11: mapping-zones 47, 49, 52, 53, 62;
Multi-zone 13: mapping-zones 60, 61, 63, 64, 65, 66;
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Example of a header file for Multi-zone 1
BYTEORDER M
LAYOUT img
NROWS 31326
NCOLS 26024
NBANDS 1
NBITS 8
SKIPBYTES 0
ULXMAP -2303835
ULYMAP 3180435
XDIM 30
YDIM 30
******************************************************************************************2007Andrew LaMotteU.S. Geological Surveymailing and physical address5522 Research Park DriveBaltimoreMaryland21228USA443-498-5549443-498-5510alamotte@usgs.govMonday through Friday, 9:00 am - 5:00 pm ESTemailRasterGrid Cell44167816661Albers Conical Equal Area29.50000045.500000-96.00000023.0000000.0000000.000000row and column30.00000030.000000metersNorth American Datum of 1983Geodetic Reference System 806378137.000000298.257222
cnpy01_2.vatValue attribute table.ESRI - Entity Attribute Overview Description.RowidInternal feature number.ESRISequential unique whole numbers that are automatically generated.ValuePercent Tree CanopyNLCD 20010100PercentageCountCount is the total number of cells in a grid for each unique value.CalculatedSequential unique whole numbers that are automatically generated.100Derived number of grid cells.As neededU.S. Geological SurveyAsk USGS -- Water Webserver Teammailing address445 National CenterRestonVA201921-888-275-8747 (1-888-ASK-USGS)https://water.usgs.gov/user_feedback_form.htmlDownloadable DataAlthough this data set has been used by the U.S. Geological Survey, U.S. Department of the Interior,
no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data
and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is
assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade,
product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.ARC INFO GRID1.0gzipped arctar filePercentage Tree Canopy raster data for northeast quadrant of the United Statesgunzip then use tar -xvf cnpy01_2.tar, or use WinZip630,188https://water.usgs.gov/GIS/dsdl/cnpy01_2.tar.gzNot specifiedNone, this data set is provided by the USGS as a public service.2010U.S. Geological SurveyAsk USGS Water Webserver Teammailing address445 National CenterRestonVirginia20192USA1-888-275-8747 (1-888-ASK-USGS)https://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+cnpy01_2FGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998